So, I live in Western Washington and was wondering if this is actually one place where the USA wins over Europe and... I'm currently breathing 4.5 micrograms of PM2.5. So equal to living in Denmark. Success!

Let's spot-check... wait... https://www.iqair.com/us/uk/england/london/putney-weimar-street London is only at 9 micrograms. I guess that's still double mine. Let's be fair and pick the worst part in Seattle: https://www.iqair.com/us/usa/washington/seattle/overlook-at-magnolia still 5.8 micrograms. Let's try one more time in Germany, It seems like any place in Germany will be above a 10. https://www.iqair.com/us/germany/nordrhein-westfalen/koln/rodenkirchen it's 5.

So maybe this is a time when Western Washington is on par with Europe? Is IQAir not a great source?